Muhannad Ghazi habban, Mohammed Zuhair Raji Ouadh, and Makki Brabeel Rashid. “Patterns of Vitamin D Deficiency in Population Resident in Diwanhyia City /Iraq”. Scholastic: Journal of Natural and Medical Education, vol. 2, no. 9, Sept. 2023, pp. 12-21, https://journal.univerpublishing.org/index.php/scholastic/article/view/2566.